I have spawned both males and females over age of 3 without any issues with the breeding or the eggs/fry.....it is usually recommended to spawn young stock because it is easier and they are usually more willing to spawn.....

IMO there's no "too old". As long as they're healthy and active, it's ok. TBH I haven't bred a pair that old (mine doesn't live that long) but I've bred old ones without any problems. Like OFL said, they're less willing to spawn compared to youngens, so you need more patience.

Yeah i thought it was so, but i wanted to check and make sure.
She's left over from my first spawn, and i know her parents parents, so I'm comfortable with her genetics and i'd love to keep the bloodline of my first ever spawn going if i can while at the same time adding more HM genetics to my PK....♥ I hope she'll breed instead of just teasing me xD.